Viktor shifts now to put a gentle arm around his brother to steady him, to offer support. "I didn't mean to keep it from you," Viktor says gently. He sweeps a few wet curls from Klaus' face. It wasn't so long ago that he woke up from a dream that may be memories from another timeline, fully himself and confused. The latter overtook the former. Viktor wanted this change to be real so badly that he pulled the old Hargreeves trick and forgot.

What happened with Allison and the Sparrows doesn't matter, but this was something that was relevant, that could have saved heartache and pain. Will the truth cause Klaus more pain? Is that why Viktor never told him?

"Let's go home and get cleaned up. I'll tell you everything you want to know." That's a promise, and maybe Klaus will detect that, maybe there are things he won't want to know.